Evaluating the performance of a multispecies statistical catch-at-age model

摘要: Predation is a substantial source of mortality that function the abundance predator and prey species. This creates challenge incorporating species interactions in statistical catch-at-age models way accounts for uncertainty input data, parameters, results. We developed statistical, age-structured, multispecies model three important Georges Bank fish community: Atlantic cod (Gadus morhua), silver hake (Merluccius bilinearis), herring (Clupea harengus). The was fit to commercial catch, survey, diet data from 1978 2007. estimated predation rates were high, compared with fishing mortality, variable time. dynamics can be explained by interplay between mortality. Monte Carlo simulations used evaluate ability estimate parameters known error introduced into each types. could estim...